tree: https://github.com/morimoto/linux fw-cleanup-2020-05-18-v1 head: ab7ab9e3fba39b481f85abd88e5d2893f013650f commit: f0b68bf29aed7f5122fcd158f1b0b3be032c422d [112/211] ASoC: soc-component: add mark for soc_pcm_components_open/close() config: riscv-randconfig-r022-20200519 (attached as .config) compiler: riscv64-linux-gcc (GCC) 9.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout f0b68bf29aed7f5122fcd158f1b0b3be032c422d # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=riscv If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>, old ones prefixed by <<): sound/soc/soc-pcm.c: In function 'soc_pcm_components_open': 631 | struct snd_soc_component *last = NULL; | ^~~~ vim +/last +631 sound/soc/soc-pcm.c bd477c31ca3ae8 Lars-Peter Clausen 2013-05-14 627 dd03907bf129b4 Kuninori Morimoto 2020-02-10 628 static int soc_pcm_components_open(struct snd_pcm_substream *substream) e7ecfdb794fef1 Kuninori Morimoto 2019-05-13 629 { e7ecfdb794fef1 Kuninori Morimoto 2019-05-13 630 struct snd_soc_pcm_runtime *rtd = substream->private_data; d2aaa8d8bfba93 Kai Vehmanen 2020-02-20 @631 struct snd_soc_component *last = NULL; e7ecfdb794fef1 Kuninori Morimoto 2019-05-13 632 struct snd_soc_component *component; 613fb50059cf19 Kuninori Morimoto 2020-01-10 633 int i, ret = 0; e7ecfdb794fef1 Kuninori Morimoto 2019-05-13 634 613fb50059cf19 Kuninori Morimoto 2020-01-10 635 for_each_rtd_components(rtd, i, component) { d2aaa8d8bfba93 Kai Vehmanen 2020-02-20 636 last = component; d2aaa8d8bfba93 Kai Vehmanen 2020-02-20 637 f0b68bf29aed7f Kuninori Morimoto 2020-03-04 638 ret = snd_soc_component_module_get_when_open(component, substream); 4a81e8f30d0b42 Kuninori Morimoto 2019-07-26 639 if (ret < 0) { e7ecfdb794fef1 Kuninori Morimoto 2019-05-13 640 dev_err(component->dev, e7ecfdb794fef1 Kuninori Morimoto 2019-05-13 641 "ASoC: can't get module %s\n", e7ecfdb794fef1 Kuninori Morimoto 2019-05-13 642 component->name); d2aaa8d8bfba93 Kai Vehmanen 2020-02-20 643 break; e7ecfdb794fef1 Kuninori Morimoto 2019-05-13 644 } e7ecfdb794fef1 Kuninori Morimoto 2019-05-13 645 ae2f4849286eed Kuninori Morimoto 2019-07-26 646 ret = snd_soc_component_open(component, substream); e7ecfdb794fef1 Kuninori Morimoto 2019-05-13 647 if (ret < 0) { e7ecfdb794fef1 Kuninori Morimoto 2019-05-13 648 dev_err(component->dev, e7ecfdb794fef1 Kuninori Morimoto 2019-05-13 649 "ASoC: can't open component %s: %d\n", e7ecfdb794fef1 Kuninori Morimoto 2019-05-13 650 component->name, ret); d2aaa8d8bfba93 Kai Vehmanen 2020-02-20 651 break; e7ecfdb794fef1 Kuninori Morimoto 2019-05-13 652 } e7ecfdb794fef1 Kuninori Morimoto 2019-05-13 653 } dd03907bf129b4 Kuninori Morimoto 2020-02-10 654 d2aaa8d8bfba93 Kai Vehmanen 2020-02-20 655 return ret; e7ecfdb794fef1 Kuninori Morimoto 2019-05-13 656 } e7ecfdb794fef1 Kuninori Morimoto 2019-05-13 657 :::::: The code at line 631 was first introduced by commit :::::: d2aaa8d8bfba93237ac944ee058fb98e2c2ef983 ASoC: soc-pcm: fix state tracking error in snd_soc_component_open/close() :::::: TO: Kai Vehmanen <kai.vehmanen(a)linux.intel.com&gt; :::::: CC: Mark Brown <broonie(a)kernel.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org